senate majority leader harry reid strongly defended menendez on tuesday, and attacked the online story. >> i've told you how i feel about the source of this stuff is, really very, very typical for the source. >> reporter: but today, after reid's aides said menendez failed to tell reid about those reimbursed trips to the caribbean, senator reid distanced himself a bit. >> he's an outstanding senator. he's now the new chair of the foreign relations committee. any questions in this regard direct to him. i don't know anything about it. >> reporter: but the fbi is asking questions about the senator's wealthy friend and big campaign donor, dr. salomon melgan, whose corporate jet like this one, senator used to fly to the doctor's home in the dominican republic. the fbi and federal health care fraud investigators raided dr. melgan's florida office this week and hauled away several boxes. the fbi would only call it law enforcement activity. in an e-mailed statement, melgin's lawyer says, "the government has not informed dr. melgen what concerns it may have. we are confident dr. melgen has acted